Where does “postpostmodernism” come from?

postpostmodernism (English) comes from English post, from Middle French poste, from Italian posta, from Latin probāre, from Latin probō, from Latin Probus, from Proto-Indo-European pro-bhwo-, from Proto-Indo-European pro- — passed , crossed.

Ancestry of “postpostmodernism”, step by step

postpostmodernism traces back through two separate lines of ancestry.

via English post

StepLanguageWordMeaning
1EnglishpostA long dowel or plank protruding from the ground;...
2Middle Frenchposte
3Italianpostamail, post; post office; stakes
4Latinprobāre
5Latinprobōto approve, permit, commend
6LatinProbusgood, serviceable, excellent, superior, able
7Proto-Indo-Europeanpro-bhwo-being in front, prominent
8Proto-Indo-Europeanpro-toward, forward
9Proto-Indo-Europeanpor-to give birth; forward, through; going, passage
10Proto-Indo-Europeanper-before, in front; first; to go through
11Proto-Indo-Europeanpr̥tóspassed , crossed

via English postmodernism

StepLanguageWordMeaning
1EnglishpostmodernismAny style in art, architecture, literature,...
2EnglishmodernismModern or contemporary ideas, thought, practices,...
3English-ismUsed to form nouns of action or process or result...
4Latin-ismus-ism
5Ancient Greek-ισμόςForms abstract nouns
6Ancient Greek-μόςForms abstract nouns
7Proto-Indo-European-mósCreates action/result nouns from verb stems
Every word from Proto-Indo-European pr̥tós